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Nema 8 Hollow Shaft Stepper Motor Bipolar 1.8° 0.018N·m (2.55oz.in) 0.6A 20x20x30mm 4 Wires
Compact NEMA 8 hollow shaft stepper motor with 20mm frame size, 1.8° step angle, and 0.6A phase current. Ideal for miniature automation equipment, robotics, and precision positioning systems.
Product Overview
The NEMA 8 hollow shaft stepper motor offers a compact and precise motion solution for space-limited automation systems.
With a 20×20mm frame and bipolar 1.8° step angle, this hollow shaft stepper motor provides smooth performance, stable torque, and compatibility with hollow shaft encoders or couplings for compact integration.
It’s widely used in robotics, 3D printers, lab instruments, and optical control devices.
Features
- Compact 20mm NEMA 8 frame for tight-space applications
- Precision 1.8° step angle with smooth motion control
- Hollow shaft design enables through-shaft wiring or encoder installation
- High-quality copper winding ensures low noise and low vibration
- Compatible with bipolar stepper drivers from 12V–24V DC
Technical Specifications
| Item | Specification |
|---|---|
| Step Angle | 1.8° ±5% |
| Number of Phase | 2 (Bipolar) |
| Phase Voltage | 3.9 VDC |
| Phase Current | 0.6 A |
| Phase Resistance | 6.5 Ω ±10% (At 20°C) |
| Phase Inductance | 1.7 mH ±20% |
| Holding Torque | 0.018 N·m (2.55 oz·in) |
| Insulation Class | Class B |
| Ambient Temperature | -20°C ~ +50°C |
| Motor Weight | Approx. 0.06 kg |
| Voltage Range | 12V – 24V DC |
| Recommended Driver | OK2D04200A |
| Phase | Wire Color | Function | Connection Terminal |
|---|---|---|---|
| A+ | Red | Phase A Positive | A+ |
| A− | Blue | Phase A Negative | A− |
| B+ | Green | Phase B Positive | B+ |
| B− | Black | Phase B Negative | B− |
Applications
- Miniature automation and robotics systems
- Optical and measurement equipment
- Micro pumps and medical devices
- Small CNC or 3D printing applications
Dimensions
Refer to the drawing below for the detailed dimensional structure of the NEMA8 hollow shaft stepper motor.
The output shaft size and length can be customized according to your installation requirements.
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